Rb25 Help Please

[sly32]

hey,

tried posting before but for some reason it didnt post,

so, basically cant b bothered writing everything i wrote before,

But i finally finished my rb25 conversion into my r32, i tried to start it and it cranked over fine, it didnt run thought as i believe the timing is right out and it may only fire once or twice before it dies, the cas plug was facing towards the turbo side of engine, i was told it had to face the other way, so i switched the cas around so it look like all my other rb engines, i started in the middle and then moved all way to left then all the way to the right,

same thing happened,

so i was thinking maybe the cas is stuffed, which is why it was facing the wrong way cause its reading different?

but then i was like i will do a ecu test, i got the ecu off a person on this forum and was told it was a series 2 cpu, i went to do a code test and there was no light or no screw to turn,

what is with this?

i have a series 1 cpu (i think) can give codes of both ecu's,

series 1 does ahve the light etc... will this run my car fine? ive heard they have different fuel maps etc...

anyways if some1 can give me any info that would be good,

Thanks

JV

[Phantom32]

dunno if this will help you, but your better off wiring the rb25 loom in and using a power fc ecu

wiring will cost you somewhere around $500 ish and pfc $12-1400, but believe me your much better off. when i did the conversion it was either wire it up to the old ecu and keep her stock for awhile before changing to PFC, or forking it out str8 up and getting PFC done when the engine was in.

i opted to do the PFC all the way and it worked out much much better. saves alot of headf*ks down teh track.

good luck with it

[blind_elk]

Is your new engine a S1 or S2 (does it have the ignitor unit on the rocker covers)? That will determine which ECU will run the engine.

Is the CAS aligned correctly with the exhaust cam?

Have you got fuel pressure at the rail?

[sly32]

Is your new engine a S1 or S2 (does it have the ignitor unit on the rocker covers)? That will determine which ECU will run the engine.

Is the CAS aligned correctly with the exhaust cam?

Have you got fuel pressure at the rail?

hey man,

engine is a series 2 from a stagea, what to do mean by cas aligned correctly with exhaust cam? do you mean is it set to 15 degrees timing or what ever? if so then no, i just put the cas in and started it in the middle of the bolt pattern,

i should have fuel pressure but havnt double checked, the only reason it may not have fuel pressure would be if i had it hooked up the wrong way, but as it primes every tiome and doesnt stop from to much pressure im sure its the right way around,

and to the guy saying use a series 2 loom, i am, i had a series 2 loom mopdified for the r32, cost me $350, and im not going to buy a power fc, i want everything stock, power fc will cost $1400, then $600 to tune, im not getting paid all next year so i need to save my money, plus, power fc wont help with the problem im having aat the moment,

JV

[blind_elk]

Then I don't think a S1 ECU will work it.

You can't "just put the CAS in". The CAS has a half-moon key to align it to a matching half-moon in the end of the exhaust cam. There have been SO MANY threads on this problem.

[sly32]

HAHa shit well, i bet thats what ive done, any link to thread? i will have a search for it,

Cheers mate

ok so i did a ecu test with the other ecu i have, came back code 55 so everything is fine,

i pulled the cas out and had a look at that moon key as was spoekn about, lined it up and put it in, still have the same problem but the car will start up but run like shit, is there any chance that the cas could still be off? like the moon key doesnt look like it is the perfect fit (edge on edge) so there could be room for movement and i might of gone a tooth to far maybe?

i still think its cas related, any extra help would be great thanks, im not workinging friday either, so i will have time to sort it out,

will give some cash to if they can come and fix it if i dont

Edited December 10, 2008 by sly32

[blind_elk]

You can only line up the CAS one way - assuming the key in the end of the exhaust cam hasn't broken off (which is the usual cause of problems).

At least it's running now. Did you get the injectors cleaned before you installed the engine? Check that each coil is firing.

[sly32]

You can only line up the CAS one way - assuming the key in the end of the exhaust cam hasn't broken off (which is the usual cause of problems).

At least it's running now. Did you get the injectors cleaned before you installed the engine? Check that each coil is firing.

well no its not really running at all, i wouldnt call it running, its not even close to been normal, so as the moon key wasnt broken it was was installed right the first time, havnt had injectors clean but i dont think this is the problem,

dont kno about the coils either,

JV

[sly32]

hey,

ok so ive fixed the car after 4 months of screwing around with this damn car its finally running,

the problem was a big vacuum leak, the brake master to plenum, damn i feel dumb haha, but atleast it was a easy fix, it just didnt make sense,

anyways cheers for the input,

JV